Home / 143,914.40-215,870.16-80,734.40

Finding the Fourth Proportional to 143,914.40, 215,870.16 and 80,734.40

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Solution

The fourth proportional to 143,914.40, 215,870.16 and 80,734.40 is: 121,100.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,914.40 : 215,870.16 = 80,734.40 : x
  2. Step 2: Convert to fraction form
    143,914.40/215,870.16 = 80,734.40/x
  3. Step 3: Cross multiply
    143,914.40x = 215,870.16 × 80,734.40
  4. Step 4: Simplify right side
    143,914.40x = 17,428,147,845.50
  5. Step 5: Solve for x
    x = 17,428,147,845.50/143,914.40
  6. Step 6: Final answer
    x = 121,100.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.